My kids love playing these Monster math games. Check out these great ideas for making math fun, with ideas for children from toddlers to ten. (Idea to use with Benji's speech? Feed his word cards to a monster!
Unifix cubes are a concrete representation of addition/number bonds. Building the bond with the Unifix cubes is what develops number sense. Great use for flash cards instead of looking for just memorization
Dry erase on plastic plates, hmm. From previous pinner: Perfect for math in focus number decomposition! Use a plastic plate and you can write with dry erase! Great to teach part part whole, fact families, etc.